公开(公告)号：US06476799B1

公开(公告)日：2002-11-05

申请号：US09439222

申请日：1999-11-12

申请人： Jeffrey Lee ,  Po-Hsun Hsien ,  Kenny Chien

发明人： Jeffrey Lee ,  Po-Hsun Hsien ,  Kenny Chien

IPC分类号： G09G500

CPC分类号： G06F3/046

摘要： An apparatus is provided for the wireless capture of coordinate-shift information. The apparatus includes a pulse generator that generates a pulse signal and simultaneously distributes the pulse signal into a first signal along the first path and a second signal along the second path. The apparatus further includes a working area defined by a plurality of crossing X-axis signal lines and Y-axis signal lines, and at least one coil surrounding the working area for generating a magnetic field. The apparatus also includes a scanning circuit coupled to the working area, and a synchronic determination circuit coupled to the pulse generator and the scanning circuit for receiving the first and second signals, and for determining the time delay between the receipt of the first and second signals. The apparatus further includes a signal processing circuit coupled to the scanning circuit and the synchronic determination circuit. The first signal passes through the working area and the scanning circuit to the synchronic determination circuit, and contains coordinate shift information. The position indicator can include a resonance circuit that receives signals from the magnetic field, and then re-transmits resonance signals having different pulse widths to the working area.

摘要翻译： 提供了一种用于无线捕获坐标移位信息的装置。 该装置包括脉冲发生器，其产生脉冲信号并同时将脉冲信号沿第一路径分配成第一信号，沿着第二路径分配第二信号。 该装置还包括由多个交叉的X轴信号线和Y轴信号线限定的工作区域和围绕工作区域的至少一个线圈，用于产生磁场。 该装置还包括耦合到工作区域的扫描电路，以及耦合到脉冲发生器和扫描电路的同步确定电路，用于接收第一和第二信号，并确定接收第一和第二信号之间的时间延迟 。 该装置还包括耦合到扫描电路和同步确定电路的信号处理电路。 第一信号通过工作区域和扫描电路到同步确定电路，并包含坐标移位信息。 位置指示器可以包括从磁场接收信号的谐振电路，然后将具有不同脉冲宽度的谐振信号重新发送到工作区域。